| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [vb infin] a leading role | 8 |
|
| 2 | [vb mod] [verb] a leading role | 8 |
|
| 3 | [modal v] play a leading role | 7 |
|
| 4 | [modal v] play a leading role | 7 |
|
